DEBIAN-CVE-2021-41089

Advisory lineage Upstream: 1 Downstream: 0
Upstream
CVE-2021-41089
Published: 04 Oct 2021, 21:15
Last modified:28 Apr 2026, 20:22

Vulnerability Summary

Overall Risk (default)
medium
25/100
CVSS Score
6.3 MEDIUM
3.1 (osv_debian)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

04 Oct 2021, 21:15
Published
Vulnerability first disclosed
28 Apr 2026, 20:22
Last Modified
Vulnerability information updated

Description

Moby is an open-source project created by Docker to enable software containerization. A bug was found in Moby (Docker Engine) where attempting to copy files using `docker cp` into a specially-crafted container can result in Unix file permission changes for existing files in the host’s filesystem, widening access to others. This bug does not directly allow files to be read, modified, or executed without an additional cooperating process. This bug has been fixed in Moby (Docker Engine) 20.10.9. Users should update to this version as soon as possible. Running containers do not need to be restarted.

CVSS Metrics

  • v3.1•MEDIUM•Score: 6.3CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L

Affected Systems

  • debian•docker.io

    < 20.10.5+dfsg1-1+deb11u1 | < 20.10.10+dfsg1-1 | < 20.10.10+dfsg1-1 | < 20.10.10+dfsg1-1

References (1)